OXIDE CATALYST Russian patent published in 2016 - IPC B01J23/881 B01J23/882 B01J23/887 B01J37/03 C07C45/35 C07C47/22 

FIELD: chemistry.

SUBSTANCE: invention discloses an oxide catalyst for use in an olefin and/or alcohol oxidation reaction, a method of producing said catalyst and a method of producing a saturated aldehyde in the presence of said catalyst. The catalyst has the following formula (1): Mo₁₂Bi_aFe_bCo_cCe_dA_eB_fO_q (1), where Mo is molybdenum, Bi is bismuth, Fe is iron, Co is cobalt, Ce is cerium, A is at least one element selected from a group consisting of cerium and rubidium, B is at least one element selected from a group consisting of copper, nickel, magnesium and lead, a-f denote the atomic ratio of each of the elements to 12 Mo atoms; 2≤a≤6, 2.5<b≤5, 2≤c≤8, 0.4≤b/c≤2.5, 0.5≤d≤6, 0.01≤e≤2 and 0≤f<2, and g is the number of oxygen atoms, defined by the valence of the constituent element other than oxygen, wherein when the parameter d of a cerium and molybdenum composite oxide, which indicates a peak at 33.50° on an X-ray diffraction pattern, is taken as the reference, the level of change of d is 5000-9000 ppm. The method of producing the catalyst includes the following steps: ageing a suspension of the starting material containing molybdenum, bismuth, iron, cobalt and cerium at a temperature higher than room temperature; drying the aged suspension of the starting material; pre-calcining the dried product at 120°C or higher and 350°C or lower; and final calcining of the pre-calcined product at 400°C or higher and 700°C or lower.

EFFECT: oxide catalyst causes less formation of subsequent oxide in an olefin and/or alcohol oxidation reaction and can improve selectivity of unsaturated aldehyde.

3 cl, 2 dwg, 9 tbl, 23 ex